自感现象是高中物理电磁学中,作为电磁感应的特殊情形,重点加以研究的内容。为了让学生更好的深入理解这一课,做好自感现象的演示实验,是很重要的。如果按教材中介绍的线圈、灯泡等器材,临时奏合,往往不易成功,有时也就敷衍了事。经过多次的试验和改进,我选配了一些恰当的 The phenomenon of self-inductance is a special case of electromagnetic induction in high school physical electromagnetism. In order to allow students to better understand this lesson, it is important to do a demonstration experiment of self-induction. If you use the coils, light bulbs, and other equipment described in the textbooks, temporary engagement is often not easy to succeed, and sometimes it is also perfunctory. After several trials and improvements, I selected some appropriate ones.